How to log into Windows Server 2008-2012 DC without knowing domain name OR how to log into a machine without knowing the local computer name.

Have you ever tried to RDP into a Windows Server 2008-2012 server and either a) wanted to log into a DC and didn't know the domain name or b) wanted to log as using the local ‘administrator’ account but don’t know the PCs name?

In either scenario, simply put .\administrator

If it’s a domain controller, you’ll log in as the domain\administrator, if it’s not you’ll log into the local administrator account.